MySQL is a multi-user, multi-threaded SQL database server. It consists ofthe MySQL server daemon (mysqld) and many client programs and libraries.It was found that the MySQL PolyFromWKB() function did not sanity checkWell-Known Binary (WKB) data. A remote, authenticated attacker could usespecially-crafted WKB data to crash mysqld. This issue only caused atemporary denial of service, as mysqld was automatically restarted afterthe crash. (CVE-2010-3840)A flaw was found in the way MySQL processed certain alternating READrequests provided by HANDLER statements. A remote, authenticated attackercould use this flaw to provide such requests, causing mysqld to crash. Thisissue only caused a temporary denial of service, as mysqld wasautomatically restarted after the crash. (CVE-2010-3681)A directory traversal flaw was found in the way MySQL handled theparameters of the MySQL COM_FIELD_LIST network protocol command. A remote,authenticated attacker could use this flaw to obtain descriptions of thefields of an arbitrary table using a request with a specially-craftedtable name. (CVE-2010-1848)All MySQL users are advised to upgrade to these updated packages, whichcontain backported patches to correct these issues. After installing thisupdate, the MySQL server daemon (mysqld) will be restarted automatically.